145240431 has 16 divisors (see below), whose sum is σ = 221539584. Its totient is φ = 82911744.

The previous prime is 145240379. The next prime is 145240441. The reversal of 145240431 is 134042541.

It is not a de Polignac number, because 145240431 - 2¹⁰ = 145239407 is a prime.

It is a super-2 number, since 2×145240431² = 42189565594131522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145240441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22716 + ... + 28398.

It is an arithmetic number, because the mean of its divisors is an integer number (13846224).

Almost surely, 2^145240431 is an apocalyptic number.

145240431 is a deficient number, since it is larger than the sum of its proper divisors (76299153).

145240431 is a wasteful number, since it uses less digits than its factorization.

145240431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6910.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 145240431 is about 12051.5737976415. The cubic root of 145240431 is about 525.6490005550.

Adding to 145240431 its reverse (134042541), we get a palindrome (279282972).

The spelling of 145240431 in words is "one hundred forty-five million, two hundred forty thousand, four hundred thirty-one".